Abstract: U-Boot technology is capable of supporting large without beams. U-Boot beton is a farm work made of recycled polypropylene. Voids from work placed in between the top in bottom reinforcements of slab. It is used to create slabs with large span or that are able to support large load without beams. U-boot is fire resistance. It is a recycled polypropylene formwork that was designed to create lightened slab & rafts.